D) laboratory experiments because every experiment needs a control and a variable.
Answer:
The precaution to take while observing Rhizopus under microscope is wear hand glovers as one must not touch the mould with bare hands, and if you do so, wash hands thoroughly afterwards. If anyone is having allergies like asthma, then one must keep away from the mould.
Explanation:
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6CO^2 + 6H2O—->sunlight C6H12O6+6O2
Answer:
It would be the cell theory